Java Utililty Methods Path File Read nio

return breadcrumbPath(urlPrefix, path, sep, "", false);

requireNonNull(directory, "No directory provided");
if (!(Files.isReadable(directory) && Files.isDirectory(directory))) {
    throw new IllegalArgumentException(String.format("Directory is not readable, %s", directory));
return directory;

final String filename = file.getFileName().toString().toLowerCase();
if (filename.endsWith(".gz")) {
    return new BufferedReader(new InputStreamReader(new GZIPInputStream(Files.newInputStream(file))));
return Files.newBufferedReader(file);

if (resourcePath == null)
    throw new IllegalArgumentException("resourcePath may not be null");
if (resourceDesc == null && logger != null)
    resourceDesc = resourcePath;
InputStream result = null;
if (result == null) {
    try {
        Path filePath = FileSystems.getDefault().getPath(resourcePath).toAbsolutePath();
...

URL[] urls = Arrays.stream(TEST_CLASS_PATH.split(File.pathSeparator)).map(Paths::get).map(Path::toUri)
        .map(x -> {
            try {
                return x.toURL();
            } catch (MalformedURLException ex) {
                throw new Error(
                        "Test issue. JTREG property" + " 'test.class.path'" + " is not defined correctly",
                        ex);
...

try {
    FileInputStream fis = new FileInputStream(p.toFile());
    return loadAndClose(fis, errorStream, propertyInfo);
} catch (FileNotFoundException e) {
    errorStream.println("Could not find property file " + propertyInfo);
    return new Properties();

if (!isExists(filePath) || !isFile(filePath)) {
    throw new IllegalArgumentException("The given path doesn't point to an existing file");
StringBuilder strBuilder = new StringBuilder();
try (Scanner scanner = new Scanner(filePath, StandardCharsets.UTF_8.name())) {
    while (scanner.hasNextLine()) {
        strBuilder.append(scanner.nextLine());
        strBuilder.append('\n');
...

Scanner in = null;
try {
    in = new Scanner(p.toFile());
} catch (FileNotFoundException e) {
    e.printStackTrace();
StringBuffer buffer = new StringBuffer();
while (in.hasNextLine()) {
...

Properties props = new Properties();
try (InputStream in = Files.newInputStream(file)) {
    props.load(in);
return props;

if (path == null) {
    path = "/";
File f = new File(path);
if (f.exists()) {
    return f.getAbsoluteFile();
if (!path.startsWith("/")) {
...